Sadly, Apollo Computer had this concept 20+ years ago. The Apollo Domain Operating System was built from the ground up as a network operating system. Everything from the kernel up was designed with networking in mind. It was a brilliant yet ultimately dead operating system. The biggest downfall was being expensive and proprietary. Sun Microsystems won through a cheaper alternative and doomed us forever with NFS.
I had the misery of working with Apollos at one employer.
There were two major issues in my opinion:
1. Security: There wasn't any. If you logged into just *one* host, you could change ANYTHING on ANY OTHER HOST.
Imagine NFS-exporting "/" read/write to the world.
2. There was an environment variable that could be set to mimic either SYSV Unix, of BSD Unix.
The reality was it didn't emulate either, making attempts to compile/run open-source sw an exercise in futility.